MODEL:U.S Met

ZJ70/4500D

ZJ70/4500DB

Nominal drilling depth:

14800∼23000ft 4500∼7000m(4 1/2"DP)
13100∼19700ft 4000∼6000m(5"DP)

14800∼23000ft 4500∼7000m(4 1/2"DP)
13100∼19700ft 4000∼6000m(5"DP)

Max.hook load:

992000lps  4500kN

992000lps  4500kN

Max.drill stem load: 

485000lps  2200kN

485000lps  2200kN

Drawworks max.input power :

2000HP 1470kw

2000HP 1470kw

Drawworks speed steps     

4/stepless

stepless

Main brake model       

Hydraulic disk brake/band brake

Hydraulic disk brake/band brake

Auxiliary brake model

energy consumption brake /eddy current brake /E.T.N brake

energy consumption brake/eddy current brake /E.T.N brake

Wireline diameter:     

1-1/2"   38mm

1-1/2"   38mm

Crown sheaves number and travelling sheaves number

7×6

7×6

Open diameter of rotary table:

37-1/2"  952.5mm

37-1/2"  952.5mm

Rotary table drive type            

Independent electric drive 

Independent electric drive

Mast type

"K"

"K"

Clear height of mast:

152ft   46.5m

152ft   46.5m

Substructure height:

20.5ft(7.5m),29.5ft(9m),34.5ft(10.5m)

20.5ft(7.5m),29.5ft(9m),34.5ft(10.5m)

Clear height of substructure:

20ft(6.12m),25ft(7.62m),30ft(9.12m)

20ft(6.12m),25ft(7.62m),30ft(9.12m)

Power of single mud pump:

1600HP   1180kw

1600HP   1180kw

Mud pump sets

3

3

Type of driving

AC-SCR-DC

AC-VFD-AC

Power of main diesel:

1630HP  1200kw

1630HP  1200kw

Main diesel sets

4

4

Total volume of mud tank:

2500BBL  380 m3

2500BBL  380 m3